//
//  DreamSpace.h
//  作业8
//
//  Created by dllo on 16/7/13.
//  Copyright © 2016年 YMJ. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface DreamSpace<__contravariant ObjectType> : NSObject
@property (nonatomic,strong) ObjectType firstObject;
//- (void)addObject:(id)object;
//- (id)anyObject;
- (void)addObject:(ObjectType)object;
- (ObjectType)anyObject;
- (__kindof NSMutableArray *)returnArray;
- (NSArray *)returnMutableArray;
@end
